initial buildroot for linux 5.15

package/libgeos/Config.in

@@ -0,0 +1,19 @@
+config BR2_PACKAGE_LIBGEOS
+	bool "libgeos"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_WCHAR
+	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464
+	depends on !BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597
+	help
+	  GEOS (Geometry Engine - Open Source) is a C++ port of the
+	  JTS Topology Suite (JTS). It aims to contain the complete
+	  functionality of JTS in C++. This includes all the OpenGIS
+	  Simple Features for SQL spatial predicate functions and
+	  spatial operators, as well as specific JTS enhanced functions.
+
+	  https://trac.osgeo.org/geos
+
+comment "libgeos needs a toolchain w/ C++, wchar, not binutils bug 21464, 27597"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR || \
+		   BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 || \
+		   BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597

package/libgeos/libgeos.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  7e630507dcac9dc07565d249a26f06a15c9f5b0c52dd29129a0e3d381d7e382a  geos-3.9.1.tar.bz2
+sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING

package/libgeos/libgeos.mk

@@ -0,0 +1,32 @@
+################################################################################
+#
+# libgeos
+#
+################################################################################
+
+LIBGEOS_VERSION = 3.9.1
+LIBGEOS_SITE = http://download.osgeo.org/geos
+LIBGEOS_SOURCE = geos-$(LIBGEOS_VERSION).tar.bz2
+LIBGEOS_LICENSE = LGPL-2.1
+LIBGEOS_LICENSE_FILES = COPYING
+LIBGEOS_INSTALL_STAGING = YES
+LIBGEOS_CONFIG_SCRIPTS = geos-config
+LIBGEOS_CONF_OPTS = -DBUILD_BENCHMARKS=OFF
+
+LIBGEOS_CXXFLAGS = $(TARGET_CXXCFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
+LIBGEOS_CXXFLAGS += -O0
+endif
+
+ifeq ($(BR2_arm)$(BR2_armeb),y)
+LIBGEOS_CONF_OPTS += -DDISABLE_GEOS_INLINE=ON
+endif
+
+ifeq ($(BR2_or1k),y)
+LIBGEOS_CXXFLAGS += -mcmodel=large
+endif
+
+LIBGEOS_CONF_OPTS += -DCMAKE_CXX_FLAGS="$(LIBGEOS_CXXFLAGS)"
+
+$(eval $(cmake-package))